I want to change the Droid Software on my phone to a totally western version. I dont want to see any chinese on my phone at all expect in the dictionary. (For example, remove Baidu search and use only Google)

From what you describe, it seems that you would need root access in order to at least change the default settings. You should be able to change the greyed-out settings with root. Root-level access is the equivalent of administrator access on Windows.

There probably is a way to install a different ROM on the phone - it's practically identical to the HTC Desire Z - but you are going to be reliant on the work of others to do so - each type of phone has individual hardware that requires its own set of drivers, for example.

It's a new phone, so I don't know if there has been a proper custom ROM released for it yet. I'd be inclined to keep a close watch on the Cyanogenmod forums. CM is my favourite mod for Android.

I think rooting your phone will solve the default search provider problem you have. However, if you want to at least make the Chinese stuff invisible, you should be able to go to Settings > Language and keyboard settings, and change the default input method to English.